[deliverable/linux.git] / sound / core / Kconfig

# ALSA soundcard-configuration
config SND_TIMER
	tristate

config SND_PCM
	tristate
	select SND_TIMER

config SND_HWDEP
	tristate

config SND_RAWMIDI
	tristate

config SND_COMPRESS_OFFLOAD
	tristate

# To be effective this also requires INPUT - users should say:
#    select SND_JACK if INPUT=y || INPUT=SND
# to avoid having to force INPUT on.
config SND_JACK
	bool

config SND_SEQUENCER
	tristate "Sequencer support"
	select SND_TIMER
	help
	  Say Y or M to enable MIDI sequencer and router support.  This
	  feature allows routing and enqueueing of MIDI events.  Events
	  can be processed at a given time.

	  Many programs require this feature, so you should enable it
	  unless you know what you're doing.

config SND_SEQ_DUMMY
	tristate "Sequencer dummy client"
	depends on SND_SEQUENCER
	help
	  Say Y here to enable the dummy sequencer client.  This client
	  is a simple MIDI-through client: all normal input events are
	  redirected to the output port immediately.

	  You don't need this unless you want to connect many MIDI
	  devices or applications together.

	  To compile this driver as a module, choose M here: the module
	  will be called snd-seq-dummy.

config SND_OSSEMUL
	select SOUND_OSS_CORE
	bool

config SND_MIXER_OSS
	tristate "OSS Mixer API"
	select SND_OSSEMUL
	help
	  To enable OSS mixer API emulation (/dev/mixer*), say Y here
	  and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.

	  Many programs still use the OSS API, so say Y.

	  To compile this driver as a module, choose M here: the module
	  will be called snd-mixer-oss.

config SND_PCM_OSS
	tristate "OSS PCM (digital audio) API"
	select SND_OSSEMUL
	select SND_PCM
	help
	  To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y
	  here and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.

	  Many programs still use the OSS API, so say Y.

	  To compile this driver as a module, choose M here: the module
	  will be called snd-pcm-oss.

config SND_PCM_OSS_PLUGINS
	bool "OSS PCM (digital audio) API - Include plugin system"
	depends on SND_PCM_OSS
        default y
	help
          If you disable this option, the ALSA's OSS PCM API will not
          support conversion of channels, formats and rates. It will
          behave like most of new OSS/Free drivers in 2.4/2.6 kernels.

config SND_SEQUENCER_OSS
	bool "OSS Sequencer API"
	depends on SND_SEQUENCER
	select SND_OSSEMUL
	help
	  Say Y here to enable OSS sequencer emulation (both
	  /dev/sequencer and /dev/music interfaces).

	  Many programs still use the OSS API, so say Y.

	  If you choose M in "Sequencer support" (SND_SEQUENCER),
	  this will be compiled as a module. The module will be called
	  snd-seq-oss.

config SND_HRTIMER
	tristate "HR-timer backend support"
	depends on HIGH_RES_TIMERS
	select SND_TIMER
	help
	  Say Y here to enable HR-timer backend for ALSA timer.  ALSA uses
	  the hrtimer as a precise timing source. The ALSA sequencer code
	  also can use this timing source.

	  To compile this driver as a module, choose M here: the module
	  will be called snd-hrtimer.

config SND_SEQ_HRTIMER_DEFAULT
	bool "Use HR-timer as default sequencer timer"
	depends on SND_HRTIMER && SND_SEQUENCER
	default y
	help
	  Say Y here to use the HR-timer backend as the default sequencer
	  timer.

config SND_RTCTIMER
	tristate "RTC Timer support"
	depends on RTC
	select SND_TIMER
	help
	  Say Y here to enable RTC timer support for ALSA.  ALSA uses
	  the RTC timer as a precise timing source and maps the RTC
	  timer to ALSA's timer interface.  The ALSA sequencer code also
	  can use this timing source.

	  To compile this driver as a module, choose M here: the module
	  will be called snd-rtctimer.

	  Note that this option is exclusive with the new RTC drivers
	  (CONFIG_RTC_CLASS) since this requires the old API.

config SND_SEQ_RTCTIMER_DEFAULT
	bool "Use RTC as default sequencer timer"
	depends on SND_RTCTIMER && SND_SEQUENCER
	depends on !SND_SEQ_HRTIMER_DEFAULT
	default y
	help
	  Say Y here to use the RTC timer as the default sequencer
	  timer.  This is strongly recommended because it ensures
	  precise MIDI timing even when the system timer runs at less
	  than 1000 Hz.

	  If in doubt, say Y.

config SND_DYNAMIC_MINORS
	bool "Dynamic device file minor numbers"
	help
	  If you say Y here, the minor numbers of ALSA device files in
	  /dev/snd/ are allocated dynamically.  This allows you to have
	  more than 8 sound cards, but requires a dynamic device file
	  system like udev.

	  If you are unsure about this, say N here.

config SND_MAX_CARDS
	int "Max number of sound cards"
	range 4 256
	default 32
	depends on SND_DYNAMIC_MINORS
	help
	  Specify the max number of sound cards that can be assigned
	  on a single machine.

config SND_SUPPORT_OLD_API
	bool "Support old ALSA API"
	default y
	help
	  Say Y here to support the obsolete ALSA PCM API (ver.0.9.0 rc3
	  or older).

config SND_VERBOSE_PROCFS
	bool "Verbose procfs contents"
	depends on PROC_FS
	default y
	help
	  Say Y here to include code for verbose procfs contents (provides
          useful information to developers when a problem occurs).  On the
          other side, it makes the ALSA subsystem larger.

config SND_VERBOSE_PRINTK
	bool "Verbose printk"
	help
	  Say Y here to enable verbose log messages.  These messages
	  will help to identify source file and position containing
	  printed messages.

	  You don't need this unless you're debugging ALSA.

config SND_DEBUG
	bool "Debug"
	help
	  Say Y here to enable ALSA debug code.

config SND_DEBUG_VERBOSE
	bool "More verbose debug"
	depends on SND_DEBUG
	help
	  Say Y here to enable extra-verbose debugging messages.
	  
	  Let me repeat: it enables EXTRA-VERBOSE DEBUGGING messages.
	  So, say Y only if you are ready to be annoyed.

config SND_PCM_XRUN_DEBUG
	bool "Enable PCM ring buffer overrun/underrun debugging"
	default n
	depends on SND_DEBUG && SND_VERBOSE_PROCFS
	help
	  Say Y to enable the PCM ring buffer overrun/underrun debugging.
	  It is usually not required, but if you have trouble with
	  sound clicking when system is loaded, it may help to determine
	  the process or driver which causes the scheduling gaps.

config SND_VMASTER
	bool

config SND_KCTL_JACK
	bool

config SND_DMA_SGBUF
	def_bool y
	depends on X86

source "sound/core/seq/Kconfig"
Commit	Line	Data
1da177e4 LT	1	# ALSA soundcard-configuration
	2	config SND_TIMER
	3	tristate
1da177e4 LT	4
	5	config SND_PCM
	6	tristate
	7	select SND_TIMER
1da177e4 LT	8
	9	config SND_HWDEP
	10	tristate
1da177e4 LT	11
	12	config SND_RAWMIDI
	13	tristate
1da177e4	14
5c845beb TI	15	config SND_COMPRESS_OFFLOAD
	16	tristate
	17
0d94e41a MB	18	# To be effective this also requires INPUT - users should say:
	19	# select SND_JACK if INPUT=y \|\| INPUT=SND
	20	# to avoid having to force INPUT on.
	21	config SND_JACK
	22	bool
	23
1da177e4 LT	24	config SND_SEQUENCER
1da177e4 LT	25	tristate "Sequencer support"
1da177e4 LT	26	select SND_TIMER
	27	help
	28	Say Y or M to enable MIDI sequencer and router support. This
	29	feature allows routing and enqueueing of MIDI events. Events
	30	can be processed at a given time.
	31
	32	Many programs require this feature, so you should enable it
	33	unless you know what you're doing.
	34
	35	config SND_SEQ_DUMMY
	36	tristate "Sequencer dummy client"
	37	depends on SND_SEQUENCER
	38	help
	39	Say Y here to enable the dummy sequencer client. This client
	40	is a simple MIDI-through client: all normal input events are
	41	redirected to the output port immediately.
	42
	43	You don't need this unless you want to connect many MIDI
	44	devices or applications together.
	45
	46	To compile this driver as a module, choose M here: the module
	47	will be called snd-seq-dummy.
	48
	49	config SND_OSSEMUL
d886e87c	50	select SOUND_OSS_CORE
1da177e4	51	bool
1da177e4 LT	52
	53	config SND_MIXER_OSS
	54	tristate "OSS Mixer API"
1da177e4 LT	55	select SND_OSSEMUL
	56	help
	57	To enable OSS mixer API emulation (/dev/mixer*), say Y here
	58	and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
	59
	60	Many programs still use the OSS API, so say Y.
	61
	62	To compile this driver as a module, choose M here: the module
	63	will be called snd-mixer-oss.
	64
	65	config SND_PCM_OSS
	66	tristate "OSS PCM (digital audio) API"
1da177e4 LT	67	select SND_OSSEMUL
	68	select SND_PCM
	69	help
	70	To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y
	71	here and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
	72
	73	Many programs still use the OSS API, so say Y.
	74
	75	To compile this driver as a module, choose M here: the module
	76	will be called snd-pcm-oss.
	77
21a3479a JK	78	config SND_PCM_OSS_PLUGINS
	79	bool "OSS PCM (digital audio) API - Include plugin system"
	80	depends on SND_PCM_OSS
	81	default y
	82	help
	83	If you disable this option, the ALSA's OSS PCM API will not
	84	support conversion of channels, formats and rates. It will
	85	behave like most of new OSS/Free drivers in 2.4/2.6 kernels.
	86
1da177e4 LT	87	config SND_SEQUENCER_OSS
1da177e4 LT	88	bool "OSS Sequencer API"
89fe5117	89	depends on SND_SEQUENCER
1da177e4 LT	90	select SND_OSSEMUL
	91	help
	92	Say Y here to enable OSS sequencer emulation (both
	93	/dev/sequencer and /dev/music interfaces).
	94
	95	Many programs still use the OSS API, so say Y.
	96
c2f60c52 FD	97	If you choose M in "Sequencer support" (SND_SEQUENCER),
	98	this will be compiled as a module. The module will be called
	99	snd-seq-oss.
1da177e4	100
bbaf5e97 TI	101	config SND_HRTIMER
	102	tristate "HR-timer backend support"
	103	depends on HIGH_RES_TIMERS
	104	select SND_TIMER
	105	help
	106	Say Y here to enable HR-timer backend for ALSA timer. ALSA uses
	107	the hrtimer as a precise timing source. The ALSA sequencer code
	108	also can use this timing source.
	109
	110	To compile this driver as a module, choose M here: the module
	111	will be called snd-hrtimer.
	112
	113	config SND_SEQ_HRTIMER_DEFAULT
	114	bool "Use HR-timer as default sequencer timer"
	115	depends on SND_HRTIMER && SND_SEQUENCER
	116	default y
	117	help
	118	Say Y here to use the HR-timer backend as the default sequencer
	119	timer.
	120
1da177e4 LT	121	config SND_RTCTIMER
1da177e4 LT	122	tristate "RTC Timer support"
89fe5117	123	depends on RTC
1da177e4 LT	124	select SND_TIMER
	125	help
	126	Say Y here to enable RTC timer support for ALSA. ALSA uses
	127	the RTC timer as a precise timing source and maps the RTC
	128	timer to ALSA's timer interface. The ALSA sequencer code also
	129	can use this timing source.
	130
	131	To compile this driver as a module, choose M here: the module
	132	will be called snd-rtctimer.
	133
52948b3f TI	134	Note that this option is exclusive with the new RTC drivers
	135	(CONFIG_RTC_CLASS) since this requires the old API.
	136
a4f508b2 CL	137	config SND_SEQ_RTCTIMER_DEFAULT
	138	bool "Use RTC as default sequencer timer"
	139	depends on SND_RTCTIMER && SND_SEQUENCER
e78a37bc	140	depends on !SND_SEQ_HRTIMER_DEFAULT
a4f508b2 CL	141	default y
	142	help
	143	Say Y here to use the RTC timer as the default sequencer
	144	timer. This is strongly recommended because it ensures
	145	precise MIDI timing even when the system timer runs at less
	146	than 1000 Hz.
	147
	148	If in doubt, say Y.
	149
332682b1	150	config SND_DYNAMIC_MINORS
b10e5391	151	bool "Dynamic device file minor numbers"
332682b1 CL	152	help
	153	If you say Y here, the minor numbers of ALSA device files in
	154	/dev/snd/ are allocated dynamically. This allows you to have
	155	more than 8 sound cards, but requires a dynamic device file
	156	system like udev.
	157
	158	If you are unsure about this, say N here.
	159
7bb2491b TI	160	config SND_MAX_CARDS
	161	int "Max number of sound cards"
	162	range 4 256
	163	default 32
	164	depends on SND_DYNAMIC_MINORS
	165	help
	166	Specify the max number of sound cards that can be assigned
	167	on a single machine.
	168
59d48582 TI	169	config SND_SUPPORT_OLD_API
59d48582 TI	170	bool "Support old ALSA API"
59d48582 TI	171	default y
	172	help
	173	Say Y here to support the obsolete ALSA PCM API (ver.0.9.0 rc3
	174	or older).
	175
21a3479a JK	176	config SND_VERBOSE_PROCFS
21a3479a JK	177	bool "Verbose procfs contents"
89fe5117	178	depends on PROC_FS
21a3479a JK	179	default y
	180	help
	181	Say Y here to include code for verbose procfs contents (provides
a982ac06	182	useful information to developers when a problem occurs). On the
21a3479a JK	183	other side, it makes the ALSA subsystem larger.
21a3479a JK	184
1da177e4 LT	185	config SND_VERBOSE_PRINTK
1da177e4 LT	186	bool "Verbose printk"
1da177e4 LT	187	help
	188	Say Y here to enable verbose log messages. These messages
	189	will help to identify source file and position containing
	190	printed messages.
	191
	192	You don't need this unless you're debugging ALSA.
	193
	194	config SND_DEBUG
	195	bool "Debug"
1da177e4 LT	196	help
	197	Say Y here to enable ALSA debug code.
	198
62cf872a TI	199	config SND_DEBUG_VERBOSE
62cf872a TI	200	bool "More verbose debug"
1da177e4 LT	201	depends on SND_DEBUG
1da177e4 LT	202	help
62cf872a TI	203	Say Y here to enable extra-verbose debugging messages.
	204
	205	Let me repeat: it enables EXTRA-VERBOSE DEBUGGING messages.
	206	So, say Y only if you are ready to be annoyed.
61fb63c0 JK	207
	208	config SND_PCM_XRUN_DEBUG
	209	bool "Enable PCM ring buffer overrun/underrun debugging"
	210	default n
b7d90a35	211	depends on SND_DEBUG && SND_VERBOSE_PROCFS
61fb63c0 JK	212	help
	213	Say Y to enable the PCM ring buffer overrun/underrun debugging.
	214	It is usually not required, but if you have trouble with
	215	sound clicking when system is loaded, it may help to determine
	216	the process or driver which causes the scheduling gaps.
e922b002 TI	217
	218	config SND_VMASTER
	219	bool
0528c749	220
35be544a TI	221	config SND_KCTL_JACK
	222	bool
	223
cc6a8acd TI	224	config SND_DMA_SGBUF
	225	def_bool y
	226	depends on X86
	227
0528c749	228	source "sound/core/seq/Kconfig"